回答編集履歴
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コード追加
test
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@@ -3,3 +3,103 @@
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マスクを用意し，`cv::Mat::copyTo`で使う．
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---
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原理確認のサンプルコードを示す．
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```C++
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class TestClass
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{
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public:
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TestClass( int ImgW, int ImgH )
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{
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m_MasterImg = cv::Mat::zeros( ImgH, ImgW, CV_8UC3 );
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m_TempCanvas = cv::Mat::zeros( m_MasterImg.size(), CV_8UC3 );
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m_Mask = cv::Mat( m_MasterImg.size(), CV_8UC1 );
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m_Mask = 255;
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}
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public:
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const cv::Mat &CurrImg() const { return m_MasterImg; }
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void DrawCircle( cv::Point Center, int Radius, cv::Scalar Color, int Thickness )
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{
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cv::circle( m_TempCanvas, Center, Radius, Color, Thickness );
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m_TempCanvas.copyTo( m_MasterImg, m_Mask );
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cv::circle( m_Mask, Center, Radius, cv::Scalar(0), Thickness );
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}
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private:
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cv::Mat m_MasterImg;
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cv::Mat m_Mask;
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cv::Mat m_TempCanvas;
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};
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int main()
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{
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TestClass Test( 320, 240 );
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//赤，緑，青 の順で描画
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Test.DrawCircle( cv::Point(100,100), 60, cv::Scalar(0,0,255), -1 );
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Test.DrawCircle( cv::Point(150,120), 50, cv::Scalar(0,255,0), 5 );
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Test.DrawCircle( cv::Point(230,150), 100, cv::Scalar(255,32,32), 8 );
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cv::imshow( "Result", Test.CurrImg() );
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if( cv::waitKey() == 's' ){ cv::imwrite( "Result.png", Test.CurrImg() ); }
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return 0;
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}
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```
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結果：
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104
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